Trolley.



G.E.LYNGH.

TROLLEY.

' APPLICATION FILED APR. 26, 1907. 7

Patented Apr; 5, 1910.-

Incl/67L Z9 7'- vices for electric locomotives and has for its UNITED STATES PATENT omen.-

enonen n. LYNCH, or LYN'N, MASSACHUSETTS, AssIeNoB, BY mnsnnnssrenmnn'rs,

. momma: JEFFREY MANUFACTURING COMPANY, A conronarron or 01110.

TROLLEY.

Specification of Letters Patent- Patented A131. 5, 1.910.

Application filed A r l 26.19am Serial Nb. 370,418.

and useful Improvements in Trolleys, of which the following is a specification, referencebein'g had thereinito the accompanying drawing. 1

1 This invention relates to diamond or double toggle lever. trolleys. or contact de object to improve the construction of apparatus of this character. y 1

In the accompanying drawings-Figure 1 is; a side View of a trolley device embodying dii ne motor car, parts being broken away. Fig.2 is an endview of the trolley, parts being broken away and other parts being. r 'presented' in section. Fig. 3 is a sectional ,view taken on theIline 3., 3, of Fig. 1. Fig.

" lfis-a top plan view of the trolley base. Fig. {5 is-a view,. on a small scale,-representing the trolley applied to a mine locomotive. In the drawings, A represents an electric inotor car, which'may be ofany usual or i ,referred construction, that represented-be- Un%of the mine locomotive type.

represents the base of the trolley, which shaped to fit into a socket or recess a proided thereforin the framework of'the car.

he trolley frame which, as stated, is of iamQnd-shape, comprises the lower arms C, the upper arms 0', C, the harps D,'.D,-

the contact wheel' E, carried by the'harps. "gll he trolley base or support B comprises a toprplate 3, and a skirt 5, extending down- I. i

w from the plate and adapted to enter itectly in the body or frame of thelocomotive, as stated, or in a separate attachment,

Q as maybe found desirable.

. .6, Gjindicate fins or projections'carried by p the base and arranged to prevent rotation thereof in'its socket. These are used when the skirt 5 is cylindrical in shape, but could be dispensed with when it is of other confi ration,'that is a configuration that would '0 itself preventyrotation of the base in the socket into which it is inserted.

The lowereuds ofthe trolleyarms G, C, are mounted in a framev that rests upon,

though it isseparate from, thebase B. .This' 7 invention adapted to be applied to a b cured totheupper ends of the arm (1",, and" frame comprises the 'side plates or pieces 4, 4, united by cross-pieces 4, l, and each formed with perforated ears or lugs '2, 2, at their upper outer corners. Pins8 extend through these perforated lugs and-[upon them are mounted the arms C. The rframe just described constitutes a sort oficasing in which the gearing shortly to be described is mounted, and by- Whichit is largely-- protected; 1

9, 9, indicatetoothed or gear segments se 5 cured respectively to'the socket-pieces 7 '7 (being preferably. integral therewith in wh1ch are secured the. lower ends 0 the trolley arms 0, O.

10 represents a rack bar mounted between the two'gear segments 9 and engaged there- Thestem of the rack barextends downward through the plate 3 and intothe skirt '5 of the base where it is pivotally'connected with alink 22, the lower end of which is screw-threaded to receive anut 11.- A. spring 12 surrounds the link or-ro'd 22, hearing at its upper end against-a shoulder 13 w in the base, and at-its lower end a ainst the nut 11, or a bearing-plate interpose between the nut and the endof the spring.

The adjacent ends of the arms C, C of the toggle frame are preferably provided with socket-pieces 15, 15, united by pins 16. Each harp D is formed with: a'.s0'cket portion-I7 in which-the upper end of an arm C is secured, and with two'arms 18. The upper ends of the arms 18 are perforatedand a' pin or shaft-19 is mounted or contact wheel E. I p p As the position of'the current-supplying wireF with which the trolley wheel engages is liable to. vary considerably from 1a 'llne '90 therein, upon which is supported the trolley.

parallel with the track upon which the car travels, provision should be madefor allowinga lateral movement of the trolley frame,

. as well as fora vertical movement thereof.v

In .order tha'tthe trolley wheel-follow. the

wire whateverits position; I'provide for-this lateral .movement as follows, reference being bad particularly to Figs. 2 and 4:.

20, 20, represent longitudinally disposed grooves formed in the upper face of the top'plate 3 of the base or support for the trolley frame, these. grooves being disposed so as'to' be parallel with the track upon which the car rests. The lower edges-21 of the side plates 4 of the framein' which the trolley wheel invention, the base V pact construction,possessing the trolley is mounted, are constructed so."

as to rest in the grooves 20, as represented in Fig. 2. The pin 23 that unites the rack 10 with the link or rod 22 is disposed longi' tudinally of the apparatus, that is its axis is parallel with the grooves 20.

With this description, and by reference to Fig. 2 it will be seen that if the trolley wire be supported so as to occupy a position laterally to one side of indicatedat F, Fig. 2, the engagement of therewith will cause the trolley frame to be laterally inclined, as indicated in dotted lines, the supporting frame in which the trolley is mounted then resting upon one edge only of that frame, the opposite edge being lifted out of its groove 20. The pivotal connection between the rack 10 and the rod 22 permits the swinging of the trolley frame without causing an inclination of the spring 12, which however, operates to hold the trolley supporting frame securely upon the base. This the spring does whatever the vertical position of the trolley frame and whether it occupies .its normal upright position, or be inclined to one side or the other as the trolley wheel follows the supply-wire.

. It will be understood that the spring 12 when put in place is under suflicient compression to force downward the rack bar 10 and extend the trolley arms, that is, 'move them, through the engagement of the rack bar with the segments 9, into an elevated position".v This insures that the contact roller. of the trolley device shall be held against the underside of the supply-wire, and'will follow the latter in its vertical undulations. i

From the foregoing description, taken in connection with the drawings, it will be seen that I have provided an exceedingly com-1 few and simple parts. The spring is largely protected by the skirt of t e trolley base, and entirely concealed when the trolley is mounted upon a car. i i

When considering certain features of my in which the toggle arms are mounted may be understood as comprising a part, corresponding with that lettered B in the drawings, adapted to provide an attachment to the car, and parts correspond ing to the side plates 4, without regard to whether such parts are of integral construction, or separate from each other, as illus trated.

-' l l hat I claim. is: v

1. in trolley device, the com a collector, a pair of toggle arms pporting the collector, a gear segment at the lower end of each of the arms, a gear rack gaging the said segments, a spring operating upon the gear rack and a1 raged to force the collector intoengagement; with the l' nation of the trolley base, as

seams In a trolley device, the combination of a collector. a diamond-shaped or double toggle supporting frame thereof, a pair of segments at the ends of the lowerarms of the said frame, a rack bar mountedbetween and in engagement withthe said gear seg ments, and a. spring operating upon said rack bar, substantially as set. forth.

3. In a trolley device, the combination of a collector, a pair of toggle arms that carry the collector, a separable base to which the lower toggle arms are pivoted, adapted to be inserted into and removed from areceiving socket, means for preventing the base from turning in its socket, and means for holding the collector in engagement with the supply wire, substantially as set forth.

In a trolley device,-the combination of a collector, a pair of toggle arms supporting the collector, a gear segment atthe lower end of the lower link of each ofsaid arms, a separable base in which the said links are pivoted, adapted to be inserted into a receiving socket, a rack bar engaging with the said segments, and a. spring supported by the said base and operating through the rack bar tohold the contact in engagement with the supply-wire, substantially as'set forth.

5. ln a trolley device, thecombination of a base adapted to be secured to a car, a t-rav eling'contacha diamond frame for carrying the contact, a frame in which the lower arms of the diamond frame are mounted, free to incline laterally relative to said base, and a single spring for holding the contact up against-the supply-wire, and for maintain-- ing the diamond frame in an upright position, substantially as set forth.

' 6. In a trolley device, the combination of a base adapted to be secured to a car, a frame loosely resting on the saidbase, and free to incline laterally to one side or the other, a trolley support pivotally mounted in the said frame on a transverse ax i s',--'and means for holding the said frame in'a central upright position, and the trolley" against the supplyl wire, substantiallyas set forth.

7. In a trolley device, the combination of a base adapted to be secured to a car and having an open seat at its upper end, a trolley arm, a frame in whichthe trolley arm is pivotally supported, on a transverse hori-. rental axis, sa d frame resting in the saidv open seat n the base,

andbeing free to incline laterally, and a spring for holding the frame upon the base and tending to maintain it in a central upright position, substantially as set forth. I

8. In a trolley device, the combination, of abase adapted to be secured to a car having a top plate in which are formed 0 en seats, a trolley arm, a frame in which the trolley a travelingeontaet, a

arm is pivotally supported, resting-in, the 'saidopen seats in the top plate of the base, as ring Situated on .the opposite side of the 'sai top. plate from the'frame, and connections between the trolley arm and the said spring, the spring and connections being arran ed to mai 'tainthe trolley in a substantia upright position, fort y 9. Ina trolley device, the combination of diamond shaped suppprting frame therefor, such frame being ee to incline laterally to one side or the other, a pair of gear segments at the lower substantially as set ends of the lower arms of the said frame, a rack bar mounted between and in engagement with the said gear segments, arod or link connected with the rack by a pivot whose axis is longitudinally disposed, and a spring acting through the said link to hold the diamond frame in working position, substantially as set forth.

In testimony whereof I afiix my signature, in presence oi two Witnesses. I GEORGE E. LYNCH.

Withess'esz- 7 H; S. RYKERT, BLAN HE PARDRIDGE. 

